from flask import Flask
from flask_restful import Resource, Api, reqparse
from datetime import date, timedelta
import configparser
import csv
import ast
import glob
import json
app = Flask(__name__)
api = Api(app)

def read_config():
    config = configparser.ConfigParser()
    config.read('config.ini')
    return config

def read_logs(log_folder):
    # Read some log files
    # UTC time, so let's look at tomorrow, today, and yesterday.
    # TODO Load new files into a database on a schedule?
    today = date.today()
    yesterday = today - timedelta(days = 1)
    tomorrow = today + timedelta(days = 1)
    file_list = glob.glob(log_folder+str(yesterday)+"*") + \
                glob.glob(log_folder+str(today)+"*") + \
                glob.glob(log_folder+str(tomorrow)+"*")

    # https://stackoverflow.com/a/66071962
    json_array = []
    for file in file_list:
        with open(file, encoding='utf-8') as csvf:
            csvReader = csv.DictReader(csvf)
            for row in csvReader:
                #add this python dict to json array
                json_array.append(row)

    # Add the call and location of this station to the packet info
    config = read_config()
    for item in json_array:
        item['station_name'] = config['Settings']['station_call']
        item['station_lat'] = config['Settings']['station_lat']
        item['station_lon'] = config['Settings']['station_lon']

    return(json_array)

# TODO need a function that adds the most recent location for any 'name'
# into a simple database. Then if it needs to be mapped, it can be, even
# if it hasn't been recently heard directly. 

class Packets(Resource):
    def get(self):
        # TODO neither path nor actual path taken are included here--how to
        # include them? I am not sure whether multiple stations would be listed
        # in 'source' or not;
        # "source": "KF4ME-7",
        # "heard": "K0UND-2",
        # TODO need to be able to pass arguments in URL to filter

        return {'data': data}, 200  # return data and 200 OK code

# Read config
config = read_config()
log_folder = config['Settings']['log_folder']
# Load logs first (just to check for errors before page loads)
data = read_logs(log_folder)

api.add_resource(Packets, '/packets')  # and '/locations' is our entry point for Locations

if __name__ == '__main__':
    app.run(debug=True, host='0.0.0.0')  # run our Flask app